Year	% of revenue
2010	1.2068195223742801
2011	0.9566633557935805
2012	0.9757431989583943
2013	1.1307390450707917
2014	1.37471746618968
2015	2.306534746545584
2016	3.1843359531631017
2017	2.234714606720943
2018	2.2671120816231003
2019	3.4577834274279815
2020	3.5283765259979663
2021	3.0216792731987665
2022	2.240159398731906